Interesting People mailing list archives
Update: Google's New Public DNS Service -- and Data Retention Issues
From: Dave Farber <dave () farber net>
Date: Thu, 3 Dec 2009 12:47:37 -0500
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From: lauren () vortex com Date: December 3, 2009 12:44:41 PM EST To: lauren-blog-notify () vortex comSubject: Lauren Weinstein's Blog Update: Google's New Public DNS Service -- and Data Retention Issues
Lauren Weinstein's Blog Update: Google's New Public DNS Service -- and Data Retention IssuesDecember 03, 2009--- ---------------------------------------------------------------------http://lauren.vortex.com/archive/000645.html--- ---------------------------------------------------------------------Greetings. In a move potentially of significant importance to the vastmajority of Internet users who do not run their own DNS servers to resolve Internet site domain names, Google <ahref="http://googlecode.blogspot.com/2009/12/introducing-google- public-dns-new-dns.html">has announced</a> their own publicly accessible DNS service. Unlike some other publicly accessible DNS services that may redirect nonexistent domain queries for advertising purposes, Google <ahref="http://code.google.com/speed/public-dns/docs/ intro.html">explicitly states</a> that "Google Public DNS never blocks, filters, or redirects users." This is a key point for users who by default are configured to resolve their Internet DNS queries through sometimes restrictive ISP DNS services that may redirect or even block some DNS queries. Using a different DNS service is usually as "easy" as changing the IP addresses in your OS DNS settings, but note that if your ISP is actually diverting the TCP/IP ports that DNS uses to communicate, it will be impossible for you to switch DNS servers through normal mechanisms. (For more information on testing for this condition, please see my <a href="http://lauren.vortex.com/archive/000377.html">Testing Your Internet Connection for ISP DNS Diversions</a> page.) A concern that frequently arises with DNS services is their logging policies. A DNS server potentially can gather a great deal of information about the Internet sites that you use. Both some ISPs and particular public DNS services have been criticized for their DNS data retention policies, which sometimes provide for indefinite or long retention of full DNS logging data.Google has obviously recognized the sensitivity of this issue. Their <a href="http://code.google.com/speed/public-dns/ privacy.html">separateprivacy policy</a> for the Google Public DNS strikes me as utterlyreasonable, particularly given its very rapid (24-48 hours) deletion ofwhat I would consider to be the key privacy-sensitive data. No doubt this won't satisfy some hard-core Google haters, who will either suggest that Google shouldn't log any DNS query data even for a very short period of time -- or will simply claim that Google is lying about their privacy and data retention policies. But I view graduated "data destruction" policies such as this one announced by Google as being completely appropriate to provide for reasonable research purposes without unreasonably impacting user privacy concerns. I can't help those critics who seem to cynically assume that Google is a serial liar about their privacy or other policies, or are convinced that integrated circuits were an "alien technology" gift from an extraterrestrial civilization. Since I run my own DNS servers, I'm not in an immediate position torigorously test the real-world performance of Google's new DNS service.But I'd be interested in your reports about this, including as much detail as you care to provide.DNS is, for better or worse, at the heart of today's Internet. It willbe fascinating to see what Google's efforts in this area will bring forth over time. --Lauren-- -- Powered by Movable Type Version 2.64 http://www.movabletype.org/
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- Update: Google's New Public DNS Service -- and Data Retention Issues Dave Farber (Dec 03)